Improvement in boiler-feeders



limiten.

J. W. BISHOP, OF NEV HAVEN, CONNECTICUT.

llVi PROVEIVI ENT IN BOILER-FEEDERS.

Specification forming part of Letters Patent No. 47. ld), dated April 1l, 1865.

To all whom t may concern.:

Be it known that I, J. WV. BISHOP, of New H Lven, in the county ofN ew Haven and State of Gonnecticut, have invented a new and useful Improvement iu Feeding Steam-Boilers 5 andI do hereby declare the following to be a full, cl aar, and exact description of the same when taken in connection with the accompanying drawings and the letters of reference marked thereon, and which said drawings constitute part of this specifica tion, and represent a section of a steam-boiler with my improvement as attached thereto.

My invention is designed to operate a mechanism to connect or disconnect the power from the pump used for forcing water into a steamboiler as occasion may require.

To enable others skilled in the art to make and use my invention, I will proceed to des5ribe the construction and operation of the same, as illustrated in the accompanying drawings.

A represents a section of a common steamboiler; d, the proper water-line b, the lower water-line. B is a hollow vessel connected with the boiler A by a pipe, C, entering or opening into the boiler at low-water line or below high-water line. The said vessel should be elevated above the boiler, as shown.

Within the vessel B, and supported by a rim resting on the rim of the vessel B, I set a second vessel, D, of such size as to leave a space around the inner vessel, D. The said vessel D has no communication with its surrounding vessel B. Over the second vessel D I place a plate, E, resting on the rim of the second vessel D, and constructed so as to form the lower part of achamber, a. Into the said plate E, I insert a tube, F, which extends nearly to the bottom and opening into the vessel D, and also through the plate E, to the chamber a. Over the said plate E, I form and fix a diaphragm, c, of any suitable flexible material, then cover the whole with a plate, H, constructed so as to form a second chamber, a', the whole bolted or otherwise secured together steam-tight.' The second chamber a should have one or more small openings, through which air maypass to or from the said chamber, accordingly as the diaphragm is lowered or raised, increasing or decreasing the capacity of the said chamber. To the said diaphragm I attach a hollow spindle, I, which extends up through the plate H in a suitable guide, j', to a lever, L. The upper end of the said spindle is closed by a cap, z'. The said lever L is separated on its fulcrum at one end, the other end connected to a shipper, N, through whichv ahelt, I, passes to a loose pulley, R, on a shaft, S. T is a fixed pulley on the same shaft, which said shait is supported in bearings U. WV is a crank xed to the said shaft and connecting by a rod, X, to a common or other force pump, Y.

Fill the inner vessel, D, by removing the cap from the spindle I, pour the fluid through the said spindle until the vessel D is nearly full, as denoted in blue. Replace the cap i upon the spindle and set the lever thereon, as shown in drawings, and my invention is complete,

ready for operation, which is as follows:

When the boiler is filled to the line cl or higher. the lower part of the pipe C will also be filled to the same level, but when steam commences to generate in the boiler the pressure upon the water in the boiler will force the water up into the vessel B, around the vessel D before the water shall have become sufficiently heated to materially affect the iluid in the vessel D. The vessel B will remain filled until the water in the boiler from the generation and consumption of steam therefrom shall have sunk below the openin g into the pipe C, as denoted by the line b. The cool water from the vessel B will, by its own gravitation, now fall into the boiler and instantly be replaced by hot steam from the boiler, which will quickly generate steam in the vessel D, from which the steam cannot escape, consequently will force the duid in the vessel D up through the tube F, fill the chamber a, and force the diaphragm o, with the spindle thereto attached, up, raising the lever L, turning the shipperN from the loose pulley R to the fixed pulley T, carrying the belt P with it. The power driving the belt will cause the shaft S to revolve, and, through the crank thereto attached, operate the pump to force water into the boiler, until so much has been forced in as to rise above the opening of the pipe C, when the water from the boiler will gradually rise to ll the vessel B, as before, condensing the steam in both vessels B and D, in consequence of which the diaphragm c will fall, and with it What I do claim as my invention, and desire to secure by Letters Patent, is

The combination of the vessels B and D, diaphragm c, or its equivalent, with a steam boiler-supplying pump, when constructed and arranged to connect or disconnect the power operating; said pump, as and for the purpose substantially as herein set forth.

J. W. BISHOP.

vWitnesses JOHN E. EARLE, RUFUS SANFORD. 

